An electrical engineer is interested in the effect on the tube conductivity of five different types of coating for cathode ray tubes used in telecommunications system display device. The following conductivity data are obtained: Coating Type 1 143 141 150 146 2 152 149 137 143 3 134 133 132 127 4 129 127 132 129 5 147 148 144 142 At 5% level of significance, is there any difference in conductivity due to coating type? What is the value of test statistic?
An electrical engineer is interested in the effect on the tube conductivity of five different types of coating for cathode ray tubes used in telecommunications system display device. The following conductivity data are obtained:
Coating Type
1 143 141 150 146
2 152 149 137 143
3 134 133 132 127
4 129 127 132 129
5 147 148 144 142
At 5% level of significance, is there any difference in conductivity due to coating type? What is the value of test statistic?
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